2.11.2 and 2.11.3 requires the ability to block execution or playback of
media. However in 2.4.5, searching a page should also search in captions,
which may not be loaded as per 2.11.2 / 2.11.3. The examples for 2.4.5
mention that the user agent moves to the specified point in the video.
Am i misunderstanding?